Robert l



NAPETERS. FHOTO-LITHOGRAPHER. wAsHlNGTcN. D c.

litited tapes lit-wt @Billiw Letters Patent N 97,153, dated Nouember 23, 1869.

IMPROVEMENT IN' IE'IRG-RESSI'VE RECIPROCATIG- MOTION FOR STAMPING .AND

OTHER MACHINES.

The Schedule referred to in these' Lettera Patent and making part of the same.

To all whom tt` m'a/y concern Be it known that I, ROBERT L. BARGLAY, of Brooklyn, E. D., in the county of Kings, and State of New variation in the thickness of the article operated upon or the extent of the operation have been regulated by moving thebe'd supporting the said article, .and this cannot always be conveniently accomplished.4

. The object of thisv invention is to produce aprogressive reciprocating motion by theaction of the revolving motor itself', from which the reciprocation is' I obtained, so that the movement is automatic.

In the drawing- Figurel is an elevation of my mechanism as applied to a bOlt-tnachineand Figure 2 is a vside view, partially in section,of the same.

The other figures are hereafter referred to.

c represents a die for clamping a bolt to be headed, by upsetting the metal, and spreading it in a die, and

b is the reciprocating bar, carrying the die or hammer, and sliding .throngh'tbe frame c.

The bolt cannot usually he compressed endwise by one blow, so as to spread the head and till the die compactly, hence several blows are vrequired before.

the head is brought to thevproper thickness. This renders it necessary to employ my progressive reciprocating motion, to follow up the metal as itis compressed by each stroketo a given point.

This modefof operating by a progressive reciprocating motion ina bolt-machine, is introduced to, illustrate my invention, the application of the said motion in the other machines will be apparent to the mechanic.

The motive-'power is applied bythe wheel d, or otherwise, to the shaft e, that-is supported in the upper part of the frame c, or in suitable bearings.

At the end of the shafte is an eccentric, f, that gives to' the bar b its primary reciprocation through the agency of the linkor pitman g and ring 7u.

Between the eccentric f and the ring h, I, however, y

introduce a second eceen tric, i, and a ii'iction is applied by the plate o and set-screw p, or otherwise, so that the eccentrica'l will be revolved bythe eccentric f, except when said eccentric i is held so that it cannot be revolved.

It will now be;nnderstood that when the parts stand in the position of iig. 1, the dies a and-bstand l furthest apart, and that it' the eccentric t was kept from rotating, but allowed to move up and down, the

eccentric f, in revolving, would reciprocate the rod orV 1 die b the amountdue to the eccentricity of f', regard-- less of the intervening eccentric t'.

It the eccentric@l is turned "nto the position of Figure 3, the dies a and b are brought more nearly together, the centres of both eccentrics fand i being below the axis of the shaft e. v

It will now be -apparent that the eccentric 'i acts -to vary t-he action ofthe die or bar b, the same way as,

would be effected by lengthening or shortening the pitman g; hence, if the eccentric fi. is turned gradually as the reciprocation progresses, the dies will follow the metal as' it is compressed, .and the reciprocationbe made also progressive in one direction, as the work is performed, and then the parts are brought back to the point of beginning. Y

This operation is performed automatically by the. flange m, of the eccentric "i, in which are pins n n, and upon the upper part of the frame c is an escapemen't slot, formed by the block s, against which onev ofthe pins n. stops, as the eccentric f is rising, then the pin n escapes above the'block s, and takes against the block t, and as the pin nis drawn down .between s and t, in the slot, by the revolution of the eccentric f, the pin n escapesl below t, and the eccentrics` 'i and f turn together, and the next pin,n, stops against the block s, and so ou.

Any number of pins n may be employed, and they regulate the progressive downward movement of b, and may also canse a progressive return movement, but it' the pins are only applied to one hundred and j eighty degrees of the 'circular ilange fm, the eccentric i may'revolve with the eccentric fahalf revolution,

and bring the parts up to their normal position.

The rotation ofthe eccentric i may be regulated or leffected by hand, or in any desired manner, to effect what is a secondary reciprocation, resulting from the said eccentric i.

1. The eccentric f,'in. combination with the eccentric t and .connection g, arranged ,and .operatingsnbstantially as set forth, whereby the progressive reciprocation iseTect-ed' by the rotation of both eccentrics, 'as set'fortli.

2. The flange lmof the' eccentrict and pins n, in combination 'with the escapement s @and eccentric f, substantially as and for the purposes set forth.

In witness whereof, I have hereunto set my signature, this 25th day of September, A. D. 1869.

' ROBERT L. BARGLAY.

Witnesses:

OHAs. H. SMITH, GEO. T. PINcKNnY. 

